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(No Model.) ZSheets--Sheet l. J. C. MULBERRY.

LUBRICATOR.

Patented July 14, 1885.

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' J. C. MULBERRY.

LUBRIGATOR. lNo. 321,996'. Patented July 14, 1885.

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JAMES COSTON MULBERRY, OF CINCINNATI, OHIO, ASSIGNOR OF TIVO- THIRDS TOFRANK A. BACHELOR AND HARRY E. LANGDON, OF SAME PLACE. y

LUBRICATOR.

jPE@PICATII@D' forming part of Letters Patent No. 321,996, dated July14, 1885.

Application filed May 23, 1835.

(No model.)

To all whom t may concern.-

Be it known that I, JAMES G. MULBERRY, of Cincinnati, in the county ofHamilton and State of Ohio, have invented a new and useful Improvementiin Lubricators; and I do hereby declare that the following is a full,clear, and exact description of the same.

My invention relates to lubricators for steam-engines. It is designedmore especially 1o for locomotive-engines, but is in the main featuresalso applicable to stationary engines.

One object of the invention is to feed the crude oil or oil unmiXed withwater or steam and without being heated, whereby a great saving of oilis effected and the parts are kept better lubricated.

Another object is to enable the operator to easily and accuratelyregulate the supply of oil to the cylinders of a locomotive-engine 2owhen steam is off or on.

A third object includes convenient arrangement for supply of oil fromthe same cup to two or more cylinders or engines.

I have shown means for feeding from the same apparatus two differentkinds of oil, and with these objects I have also sought to attain othersby improved details, all as hereinafter set forth.

In the accompanying drawings is shown the form in which I have embodiedmy invention. In these drawings, Figure l represents a central verticalsection. Fig. 2 represents a front View.

Heretofore oil-cups have been devised with 3 5 a piston adapted to movein the cup by pressure of steam behind it, and thereby to force thelubricant in front of the piston through the orifice leading to theparts to be lubricated. In these it is difficult to pack the pis- 4o tonso closely as to effectually prevent the passage of the steam and wateroit condensation to the oil-chamber or the oil from forcing its way backto the steam-chamber; and, further, by the proximity of the steam theoil is more orless heated. This heat and mixture with water'tends todiffuse the oil in a vaporous condition throughout the body of steam,

so that much of it passes oii in the exhaust without coming in contactwith the parts to be lubricated. Further, in the displacement- 5o feedlubricators, in addition to the heating of the oil and its mixture withthe steam in diffused state, the feed of oil is due wholly to thecondensation of steam, whereby the oil is displaced. This limits andimpairs the force and regulation of the supply or feed of the oil, andheretofore only one, or at most two, feed-pipes for the oil have beenled from a single cup.

In the machine shown in the drawings, A represents a steam-cylinder, andB the oilcylinder, corresponding to the ordinary oilcup. These areplaced with their central aXes in the same line, and are connected toone another by brackets a, secured to the opposing heads. The upper cudof the oil-cylinder and bot-h ends of the steam-cylinder are providedwith `central stuffing boxes, I) ed. \Vithiu the steam cylinder is aproperlypacked piston, c, and a similar piston, f, is 7o in theoil-chamber. Both these pistons are connected to one piston-rod, g,which extends through the upper head ofthe steamcyliuder. Steam from anysuitable source is led to the steam-piston above and below by means of asteam-supply pipe, D, with branches l and 2, branch l leading throughthe upper head and branch2 leading through the lower. The pistons are soarranged on the rods that both arrive at thc bottom of the cylinders atSo the same time. The oil-cylinder is supplied with oil through a hole,h, when the piston is drawn up, as it may be by admission of steamthrough the branch pipe 2. The steam is then shut off from thebranch-pipe 2 and opened in the brauch' pipe l, which supplies the steamin the steam-cylinder above the piston e, and thereby puts any requiredamount of pressure upon the oil in the oil-cylinder, feeding it throughthe supplypipes to the parts to be lubricated. The pressure of the steamis constant, and may be regulated by means of a stop-cock, 8, in thebranch pipe l, and when regulated it is constant throughout the wholemovement of the piston. The oil is delivered from the bottom of theoil-cylinder through the pipe E, which is closed by means of astop-cock, 4. This pipe E has branches It' if, on each of which isplaced a delivery-nozzle, 5, about which is a sight-feed tube, ll. Thesight-feed tube is connected to the pipe above and below by ordinarypacking and jam mits. These sightfeed tubes l1. l1 are designed for thecylinders of locomotive-engines in the form of the cup shown in thedrawings. Another sightfeed tube` n1, is connected with an extensionwith its nozzle G, similar to the nozzle 5, all of these nozzles beingadapted to deliver the of the pipe E, (marked 0,) which is provided oilin jets or drops. The pipe mis connected to a supply-pipe whichcommunicates with the air-brake engine of the locomotive, so that boththe cylinders and the air-brake engine are oiled from the same cup.'llhesight-feedtube connections are provided above and below withstop-cocks 7. These serve to regulate the flow of oil or to close thepassages whenever it may be necessary in working the apparatus. rIheupper stop cocks serve to shut oil" the stealn and prevent any returnot' the oil to llow down upon the glass when the apparatus is notworking.

It will be observed that the pipes connected directly to the sight-feedsare all in connection with one pipe, E, leading to the cup, so that asingle valve shuts off all the oil from the whole, while each nozzle isprovided with an independent stop-cock for independent regulation of theamount of oil supplied through each pipe.

It will also be observed that the supply of oil through the sight-feedtubes is upward. I propose, for the best effect', to lill thesesighti'ced tubes with a mixture of alcohol and water of specic gravitygreater than that of the oil used in the lubrieator, this servingthcpurpose of preventing freezing' at ordinary low temperatures, and theconsequent breaking of the glass when steam is suddenly turned on. Inconnection with the special form of forcefeed herein shown I am able touse three or more oil-supply pipes in connection with thesteam-cylinder, the force from the steam being sufficient for anyordinary number of oilsupply pipes. As before indicated, the apparatnsshown in the drawings is designed for a locomotive-engine; butsubstantially the same forni may be used for other purposes or in otherconnections, and the oil-supply pipes leading through the oil-cup may beled to the various parts to be lubricated.

The structure shown, in respect to the oilcnp and the means for forcingthe oil, affords another advantage by which the steam-force feed may beapplied to two cups or more than two cups, each cup containing adifferent kind of oil lor lubricating bearings of the machinery drivenby the engine, and the like. In order to provide for this I attach athird oilcylinder, '13', to the cylinder I3 by the same means used toconnect the cylinders A B, and the piston-rodg is extended through inthe same manner, as explained above, between the cylinders A B. CylinderB is filled with a kind of oil, for example, used to lubricatethejournals and bearings of machinery, and has a discharge-pipe similarto cylinder I3, which delivers the oil to the various branch pipesrequired for the purpose. The piston j, properly packed in the cylinderB', applies the pressure to the oil within the three cylinders, andforce is applied to both through the piston in the steam-cylinder.

Means for conducting the oil from the three cylinders to the variousbearings and journals may be of any ordinary construction.

A pipe, Ii, connected to the steam-cylinder above and below and to theoil-cylinder, and provided with branches having stop-cocks 8, serve toconvey away any water of condensation from the steam-cylinder and alsoto give vent to the oil-cylinder.

I claim as my invention- I. A lubricator having anindependent cylinderfor the oil and apiston therein, a separate steam-cylinder havingsteam-connections at both ends, also provided with a piston, the latterpiston being connected to and adapted to operate the pistou oftheoil-cylinder, steampipe connections with the steain-cylinder only, aventto the outside from the oil-cylinder, and oil-pipe connections with theoil-cylinder, all substantially as described.

2. A lubricator having an iiideljiendeiit oilcyliuder provided with apiston, a separate cylinder for the steam having a piston connceted withthe piston ofthe oil-cylinder, and means outside ol" said oil-cylinderforapplying pressure to the piston thereof, in combination with three ormore oil-delivering nozzles and sightfeed tubes and regulating-valvesfor each tube, all arranged to operate substantially as described.

3. A lubricator having an independent oileylindcr provided with apiston, a separate cylinder for the steam having a piston conlnectedwith the piston of the oil-cylinder, in combination with an oil-deliverypipe, E, having a transverse pipe forming branches diverging therefromlaterally, and supporting sightfeed tubes and their regulating-valves,substantially as described.

4. A lubricator having an independent oilcylinder provided with apiston, a separate cylinder for the steam having a piston connected withthe piston ofthe oil-cylinder, in combination with an oil-delivery pipe,IC, having a transverse pipe forming branches diverging therefromlaterally, sight-feed tubes with regulating-valves supported thereon,and a forward extension supporting a sight-feed tube in advance of thoseon the lateral branches, and an independent regulating-Valve for thesaid tube, substantially as described.

z An oil-cylinder provided with a piston,

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f, and piston-rod g, and devices, substantially In testimony whereof lhave signed my name as described7 for applying to the said piston tothis specication in the presence of two suba constant pressure, pipesleading from the scribing Witnesses.

oil-cylinder to nozzles 5 and 6, regulating- JAMES COSTON MULBERRY. 5valves for each of said nozzles, sight-feed Witnesses:

tubes, and pipes leading from said tubes to F. L. MIDDLETON,

the parts to be lubricated, all as set forth. WALTER DONALDSON.

